Closed loop gain is the gain that results when we apply negative feedback to "tame" the open loop gain. The closed loop gain can be calculated if we know the open loop gain and the amount of feedback (what fraction of the output voltage is negatively fed back to the input).
Herein, what is the loop gain?
In electronics and control system theory, loop gain is the sum of the gain, expressed as a ratio or in decibels, around a feedback loop. In a feedback loop, the output of a device, process or plant is sampled and applied to alter the input, to better control the output.
What is open loop configuration?
Open loop OPAMP Configuration: In the case of amplifiers the term open loop indicates that no connection, exists between input and output terminals of any type. That is, the output signal is not fedback in any form as part of the input signal. In open loop configuration, The OPAMP functions as a high gain amplifier.
What is the gain of an op amp?
Non-Inverting op-amp gain. It offers a higher input impedance than the inverting op amp circuit. Basic non-inverting operational amplifier circuit. The gain of the non-inverting circuit for the operational amplifier is easy to determine. The calculation hinges around the fact that the voltage at both inputs is the same